selenium 3 java 元素高亮显示

mport org.openqa.selenium.By;
import org.openqa.selenium.JavascriptExecutor;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;

public class BaiduDemo {
    public static void main(String[] args) throws InterruptedException {

        System.setProperty("webdriver.chrome.driver","D:\\driver\\chromedriver.exe"); //指定驱动路径

        WebDriver driver =new ChromeDriver();

        driver.get("http://www.baidu.com");

        //定位并点击登录.
        driver.findElement ( By.xpath ( "//*[@id='u1']/a[7]" ) ).click ();
        Thread.sleep ( 1000 );

        //出现的扫码页面登录  定位并点击选择用户登录
        driver.findElement ( By.xpath ( ".//*[@id='TANGRAM__PSP_10__footerULoginBtn']" ) ).click ();

        //定位用户名文本框
        WebElement userName = driver.findElement(By.id("TANGRAM__PSP_10__userName"));
        userName.sendKeys("test username");
     
        //定位密码文本框
        WebElement password =  driver.findElement(By.id("TANGRAM__PSP_10__password"));
        password.sendKeys("123456");
        

        //创建一个JavascriptExecutor对象
        JavascriptExecutor js =(JavascriptExecutor) driver;

        //用户名文本框设置颜色 ..
        js.executeScript ( "arguments[0].setAttribute('style', arguments[1]);",userName,"background: orange; border: 2px solid red;");
        
        Thread.sleep ( 2000 );

        //密码文本框设置颜色
        js.executeScript ( "arguments[0].setAttribute('style', arguments[1]);",password,"background: yellow; border: 2px solid red;");
        
        Thread.sleep ( 2000 );

        driver.quit();
    }

}

运行结果 如图 ：